Canon scanner/printer issue

macrumors 6502a

I have a mid 2011 27" imac running 10.7.1. I recently had to move some things around in my office. In doing so, i unpluged everything, including my Canon MP640 printer/scanner. I do remember being able to scan using this printer wirelessly on 10.6 and 10.7 and as far as i can remember, before the move on 10.7.1. I went to print something yesterday, and i got a communitcation error. No problem, i went to the printer, re-found my network and the printing part went fine. I then wanted to scan a document, but not only is the printer not showing up in preview or image capture, i am not getting the scan tab in system pref under print&scan. I tried downloading the lastest drivers for my printer from Canon.com and still nothing. I was hoping for suggestions.

macrumors newbie

For me, deleting the printer and then adding it back in Print and Scan has always solved this type of problem, in particular I found that when moving to Lion then updating the drivers, then deleting the printer, adding it back in solved any problem with attached Canon printers (MP640 at home and an IRc5870 multifunction copier/printer at work).

thread startermacrumors 6502a

thanks, i turned off the computer and printer last night in hopes that when i get home some magic happend. I have to check (as it was very late last night) which drivers i installed (can any check and provide a link of which one i should be using) I had deleted and tried reinstalling last night with no success, perhaps the reboot will help

macrumors 68000

I have the exact same problem with my canon mp620. I can print just fine, but can no longer scan after upgrading to Lion. I downloaded the new drivers, deleted the printer and re added, but still can't scan. I think it's either a problem with the Canon drivers, or with Lion.

thread startermacrumors 6502a

Strange thing is darster, i know i scanned stuff while the imac was running 10.7 and i believe 10.7.1. I wonder if that was all still from my Snow Leopard install and when i deleted and re-added the printer last night, now under 10.7.1, it can no longer find the scanner?
very strange. however, glad im not the only one

macrumors 68000

I'm starting to think it's either the drivers or Lion. I also have a macbook with Lion installed, and the scan function doesn't work. So now it doesn't work on both my iMac and macbook, both with Lion. Prior to Lion install, no problem.

thread startermacrumors 6502a

when i get home today, i'll do a test with my older MBP. It too has 10.7.1 installed, but i havent removed to canon in system prefs since snow leopard. I'll see if the scan preferences are still there and delete and re-add to see if they come back after re-add. I'll let you know. Have you contacted Apple or Canon about this?

macrumors 68000

Thanks for the info. I tried doing that too, but still no scan. I have the 620, so perhaps there is an issue with that printer or drivers. So at least I know it is not Lion, since you were able to resolve by updating the drivers.

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